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https://issues.apache.org/jira/browse/HIVE-24311?focusedWorklogId=529656&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-529656
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ASF GitHub Bot logged work on HIVE-24311:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 31/Dec/20 01:07
Start Date: 31/Dec/20 01:07
Worklog Time Spent: 10m
Work Description: github-actions[bot] commented on pull request #1609:
URL: https://github.com/apache/hive/pull/1609#issuecomment-752807254
This pull request has been automatically marked as stale because it has not
had recent activity. It will be closed if no further activity occurs.
Feel free to reach out on the [email protected] list if the patch is in
need of reviews.
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Issue Time Tracking
-------------------
Worklog Id: (was: 529656)
Time Spent: 0.5h (was: 20m)
> Rowcontainer should reset readBlocks when we clear rows to prevent OOM.
> -----------------------------------------------------------------------
>
> Key: HIVE-24311
> URL: https://issues.apache.org/jira/browse/HIVE-24311
> Project: Hive
> Issue Type: Bug
> Affects Versions: All Versions
> Reporter: Qiang.Kang
> Assignee: Qiang.Kang
> Priority: Major
> Labels: pull-request-available
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Hi, We found that `Rowcontainer.clearRows()` only reset some index, such as:
> `addCursor`, `itrCursor`, etc, without resetting read blocks.
> As we all know, `currentReadBlock` and `currentWriteBlock` is the main memory
> usage of a `Rowcontainer` and might be very large, depending on the data
> pattern.
> `currentReadBlock` and `currentWriteBlock` won't be the same object after
> rowcontainer flushed data to disk.
> Resetting `currentReadBlock` and `currentWriteBlock` while clearing rows will
> prevent OOM.
>
> Therefore, I submit a patch to reset read blocks for `Rowcontainer`, just
> like `PTFRowcontainer` does.
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